Gabriel/Gabariel
A person who talks so much it's annoying and thinks they're the smartest person in the room.
Gabriell: 'I'm the smartest person in the room. You're all dumb.'
Gabriell: 'I'm gonna be the best at everything. I failed my math test.'
Gabriell: 'I'm gonna beat you in a game. I don't even know how to play.'